Egg-preserving compound



\ UNITED STATES PATENT OFFICE.

HENRY KOCH, OF CHICAGO, ILLINOIS.

EGG-PRESERVING COMPOUND.

SPECIFICATION forming part of Letters Patent No. 574,911, dated January 12, 1897.

Application filed September 30,1896. Serial No. 607,389. (No specimens.)

he eggs may afterward be frequently han- To all whom it may concern.-

Be it known that I, HENRY KOCH, a citizen dled, packed in baskets, &c., without danger of the United States, residing at- Chicago, in of cracking the coating. It will be seen that 45 the county of Cook and State of Illinois, have this feature is important, since a slight crackinvented a new and useful Improvement in ing in the coating would admit the air to the Egg-Preserving Compounds, of which the folshell, when same would pass through to the lowing is a specification. egg, the coating then becoming practically My invention relates to compounds for prcuseless as a preservative. 0 serving eggs, and particularly to such as are Gum-arabic and glue have heretofore been to used in the form of a thin coating on the mixed with silicate of sodium forthe purpose shell designed to exclude the air from the of making a tough preservative coating. egg. There are, however, several objections to the The objects of my invention are to provide use of either gum-arabicorglue, among which 55 a compound which may be applied to the eggare the expense, the odor, and, chiefly,the fact shell in liquid form, will readily harden into that a coating in which either of these suban air-tight transparent coating, and which stances is used will not permit the egg shell will not crack in the course of ordinary hanto be broken in its natural manner when it is dling of eggs which have been coated with desired to use the egg. 'hen either of the 60 same. last-mentioned substances is used, a tough 2o Silicate of sodium has heretofore been used film is formed which must be torn rather than as an ingredient of difierent compounds, but broken, and therefore prevents the shell from one of the objections to its use has been that being readily broken around the middle in the coating would become brittle, so that the usual manner. The coating which I use 65 same would readily crack in handling the egg. overcomes this objection entirely, and while I have discovered that by mixing rice-flour it is somewhat elastic it will permit the shell with silicate of sodium the above-mentioned to be broken open in like manner, as if same objection is entirely overcome, and that while were not coated. the coating so formed will retain its trans- Afurtheradvantage in the use of rice-flour 7o parent, odtgl egs, air-excluding qualities it is that the fine particles preventihe varnished will also have a certain elasticity which will appearance which varnish, glue, or gum-ararender same proof against being cracked in bic give to the coating. ordinary handling. \Yhat I claim, and desire to secure by Let- I prepare my compound by thoroughly stirters Patent, is- 7 5 ring one ounce of finely-powdered rice-flour The herein-described compound to be used in about four ounces of cold water, then mixfor preserving eggs, consisting of silicate of ing same with about sixteen ounces of liquid sodium, rice-flour, and water in about the glass or silicate of sodium of about the conproportion specified. sistency of ordinarytable-syrup. I then apply this liquid to the egg with a brush, so as Ina} LOCH' 40 to rub same well into the pores of the shell, \Vitnesses:

and allow same to dry. The eggs may then \VM. R. RL'MMLER, be stored either with or without packing. FRED A. SPIES. 

